Our son is so skinny he is just 2 and weighs in at about 22lbs. He has had every test going and appears to be normal, just following the 2nd to 9th centile. He has suffered in the past from a few nasty tummy bugs that left him with a severe lactose intolerance so he now only drinks goats milk and soya products. He is not a fussy eater and will eat most things just very small amounts. I would love to hear from anyone with a similar problem or any helpful advice.